SU1365212A2 - Arrangement for replacing garlands of insulators of power transmissions overhead line under voltage - Google Patents

Abstract

The invention relates to power engineering and can be used to replace the bendable insulators of overhead transmission lines under voltage. The goal is to increase work safety. To repair the bend 7 on support 3

Description

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lift the console 8 and fasten it to the end of the crossbar. Attach the insulating blocks 12 and J8 to the console 8. Traction cable 11 is passed through block 12, one end is connected to winch 9, and the other is connected to the upper part of the finned insulator 13. Fixer 14 is attached to the second end of the finned insulator. Insulating cable 7 is passed through the block 18 and attached at one end to the fitter's chair 14, and at the other end to the emergency mechanism 19. The finned insulators 20 with hooks pick up the wire 6, and connect their second ends to the jack 5, the subdire wires are carried out by a jack 5, the force of which is transmitted to two ribbed isol torus 20. After removal of the load from a technological command Arm 7 is disengaged from the traverse and from the wire rope 16 is pulled and lowered to the ground for repair and replacement of insulators. The goal is achieved by the introduction of the console, blocks, traction and safety ropes. 1 hp ff, 4 ill.

The invention relates to electric power industry, and more specifically to devices for replacing bend insulators of overhead transmission lines under voltage, and is an improvement of the device according to author. No. 1228J77.

The purpose of the invention is to increase the safety of work.

Fig, 1 shows the proposed device, a general view; figure 2 - console with attachment to the end

traverse for the delivery of an electrician to the potential, top view in FIG. 3 - the same, side view; figure 4 - section aa in figure 2.

The device for: replacing the bend of the overhead power line of the overhead transmission line, contains a composite ladder 1 with devices for lifting 2 supports 3 to the yoke, rope 4 with fastenings, made in the form of an endless rope, fixed on the yoke 2 supports both on the ground and for delivering various devices to the yoke, jack 5c beam, fixed on the end of the yoke 2 supports and designed to remove the load of the wire 6 from the conductor 7 of the insulators, console 8, fixed on the end of the yoke 2 support s 3. The winch 9 with an electric and manual actuator, fixed to the car body 10, with its isolated zapasovannymi.v the traction rope J J, perekinu5

The unit is connected to the upper ram of the ribbed insulator 13 and has the possibility of reconnection to the upper part of the bend 7 of the insulator.

The device is equipped with an overhead assembly chair J4, to the lower part of which, at various points, is attached an insulated cable ladder 15 and an auxiliary insulating cable 16 with the possibility of reconnections to the lower part of the bend 7 of the insulator, the upper part of the other end of the ipHCToro insulator 13 and insulated polypropylene (. rope 17, filled into an additional block J8, mounted on the console 8.

In addition, the device has an anti-accidental 1st mechanism 19 whose body is attached to the body 10 of the car, and its cable to the other end of the insulating cable 17, ribbed insulators 20 attached by hooks to the wire 6 to support it, and the other end to the beam Jack 5,: power and potential rods for carrying and leveling the potential of a wire with the potential of a suspended monter chair, insurance ropes and a screening set of clothing to protect a person from the effects of electric fields.

The console 8 is made in the form of a thick-walled pipe 21, at one end of which two identical ears are fixed.

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22, ac of the other side are filled with grooves 23 and flange 24 is welded from the front side, while console 8 contains two angles 25 welded to the side surfaces of the middle part of the pipe, hook 26 with nut 27 superimposed on the pipe end with welded flange 24 and fixed in the groove 23 of the pipe 21 by means of a nut 27, a bracket 28 with a strap for fastening the console 8 to the end of the crosspiece 2 of the support 3. The assembly chair 14 is made in the form of a framework of metal pipes, covered with a metal grille, with fastener assemblies. neither at the top and bottom of the x.

When carrying out repairs or replacing a wire of insulators on an overhead transmission line under voltage, after preparing gadgets ... and tools, an electrician installs a composite ladder 1 on the support pole 3 from the bottom, lifting individual sections, starting from the top. Along the ladder 1 with the camera unit 4 with the fasteners, the electrician rises to the yoke 2 of the support 3 and secures it at a distance of 0, 5 m from the rack of the support 3, and the electrician on the ground tightens the measles and secures the second roller end of rope 4. With the help of rope 4, a console 8 is fed to the traverse, which is fastened with a bracket 26 with a bar at the end of the traverse 2 of support 3, house 5 times with a beam that is mounted on support 3 above the supporting beam 7, insulating blocks 12 and 18, which are connected via an eyelet to the console 8, a pull rope L, which This is passed through block 12 and lowered to the ground at the free end and connected to the top of the rib. This insulator 13, one end of which is connected to the upper part of the suspension mechanic chair 14, and the other end of the traction rope 11 is connected to the winch rope 9 with a polypropylene rope 17, which is passed through the block 18 and the free ends are lowered to the ground, one of which is fixed in the upper part of the assembly chair 14, and the other to the cable against the emergency mechanism 19, ribbed insulators 20, which are hooked to the wire 6, and the second ends are connected to the cable of the jack 5.

At the lower part of chair 14, rope ramp 15 and auxiliary cable 16 are attached in different places. Winch 9 understands chair 14 without an electrician to level cable 6 and cable 16 to bring it to wire 6, holding it under tension for 1 minute. After testing Isolating an electrician's lifting system, chair 14 is lowered to the ground. Then an electrician is placed in it, who must be dressed in a protective shielding kit. The presence of electrical connections between the elements of the shielding kit is checked, the potential and the power transfer rod on the chair J4 are connected.

With the help of a winch 9 and a rope 11, the chair 14 is lifted to the wire for a distance of 0.2-0.5 m. The electrician who is in chair 14 carries the power potential first and then the potential barbell 6 through the opening and shielding kit. The winch is controlled from the power take-off box driven by the engine of the machine. These winches are equipped with linear cars completed on the basis of the GAZ-66. Duplicate winch control by signal / y Stop ensures that the lifting or lowering system is stopped directly from the fitter chair 14. The lift of the suspended fitter chair ends when the upper end of the ribbed insulator J3 approaches the traverse for a distance of not more than 0.3 m. The winch 9, the chair 14 is connected to the wire 6 by means of an auxiliary cable, and the upper part of the ribbed insulator 13 is connected to the channel bar 2, the end of the traction cable 11 is reconnected to the upper part of the arm 7 of the insulators, peres uniqueness is also J6 auxiliary insulating rope to the bottom of a technological command Arm 7 insulators.

The wire 6 is undermined by a jack 5, the force of which is transmitted to two ribbed insulators 20 connected to the wire 6 by means of hooks. After removing the load from the bead 7, it is disengaged in the upper part from the crosspiece, and in the lower part from the wire, is pulled off the ground with the help of auxiliary insulating cable 16 and lowered to the ground with the help of a winch 9 and traction cable 11, repair and replacement of defective elements of the wire of 7 insulators.

Repaired wire 7 insulators with a winch 9 lift to traverse 2. Electrician on traverse 2 secures the wire of 7 insulators to traverse, and electrician in chair 14 brings it to wire 6, disconnects the auxiliary insulating cable J 6 from it and attaches it to the lower part of the fitter chair 14. The electrician on the traverse 2 connects the end of the haul rope 11 to the rib-15 and expands the possibility of using the fixed insulator 13 ,. by means of the winch 9, lifts its end and detaches the end from the support on the traverse.

Electricians on the ground are supported by a cable ladder 15 and an auxiliary insulating cable 16, an electrician mounted chair, and an electrician in a chair releases the chair's attachment to the wires and prepares the power and potential rods for moving away from the wire 6. Winch 9 lowers chair J4 for distance 0, 5 m from the wire 6, the electrician in the scam le 14 removes with a quick movement the potential and then the power rods, after which they continue to lower the chair to the earth. The electrician on the traverse 2 lowers the jack.5 and translates

Reystva on supports of various types with suspension arms of insulators, reduces the physical loads of electrical. mounters working on the ground, for 20 through the use of a winch with a mechanical drive.

Claims (2)

Invention Formula 251. Device for replacing gears overhead power line insulators,. under voltage, according to auth. No. 1226177, characterized in that, for the purpose of 30 increase the safety of production. Work, it is equipped with a console with attachment to the end of the traverse, and blocks are attached to the second end of the console through which the weight of the wire 6 is loaded onto 1ndi7 35 safety wire insulated ropes, and the winch and emergency control mechanism are installed on the vehicle with which the device is fitted and connected to its engine. isolators The equipment and devices are dismantled and lowered to the ground. The composite staircase is dismantled. Insulating means, devices and tools are placed in cases and canisters. The gangway 15 in the device is used to lower an electrician working under voltage, in case of damage to the winch drive or other malfunctions, as well as in case of need to lift to the wire of the second electrician. The corners 23 of the console 8 restrict its movement in the vertical plane, and the hook 24 in the horizontal plane. The use of the invention makes it possible to increase the safety of work performed under voltage by increasing the insulating distance between the assembly chair and the grounded support, as well as by transferring the workplace to a zone with a lower level of electric field strength, Acting on supports of various types with suspended arms of insulators reduces the physical loads of electricians working on the ground through the use of a mechanically driven winch. Invention Formula 1. Device for replacing gear overhead power line insulators,. under voltage, according to auth. No. 1226177, characterized in that, for the purpose of increase the safety of production. work, it is equipped with a console with attachment to the end of the traverse, and to the second end of the console are attached the blocks through which the proppency of the safety insulated ropes, and the winch and anti-emergency mechanism are installed on the vehicle with which the device is equipped, and are connected to its engine. 2. The device according to claim L, characterized in that the attachment unit is made in the form of a flange, two corners attached to the side surfaces of the middle part of the console, a hook fixed by a screw in a groove made in the console, and a bracket with a bar fixed on the hook . F.